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// The filter callback function.
function example_callback( $string, $arg1, $arg2 ) {
// (maybe) modify $string.
return $string;
}
add_filter( 'example_filter', 'example_callback', 10, 3 );
/*
* Apply the filters by calling the 'example_callback()' function
* that's hooked onto `example_filter` above.
*
* - 'example_filter' is the filter hook.
* - 'filter me' is the value being filtered.
* - $arg1 and $arg2 are the additional arguments passed to the callback.
$value = apply_filters( 'example_filter', 'filter me', $arg1, $arg2 );
Hi, this is a comment.
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